Allow duplicate names in different modbus entities

[janiversen]

Breaking change

Proposed change

Modbus integration checks for duplicate entity names, which avoids problems, however duplicates are only within
the same entity, e.g.

    sensor.entity1
    binary_sensor.entity1

Is not a duplicate and should be allowed.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
  fixes Modbus entity duplicate even is thay are a different type #112645
• This PR is related to issue:
• Link to documentation pull request:

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